Is there a public exploit for CVE-2025-7338?

Yes. Proof-of-concept code for CVE-2025-7338 has been published publicly.

Is there a proof of concept for CVE-2025-7338?

Yes — 1 proof-of-concept entry is linked on this page, from public repositories and community submissions. They are listed for authorised testing only.

How severe is CVE-2025-7338?

CVE-2025-7338 scores CVSS 7.5 (v3.1), rated high. EPSS puts the chance of exploitation in the next 30 days at 0.81%.

What does CVE-2025-7338 affect?

CVE-2025-7338 affects expressjs multer.

7.5 High

Multer is a node.js middleware for handling multipart/form-data.

CVE-2025-7338

Multer is a node.js middleware for handling multipart/form-data. A vulnerability that is present starting in version 1.4.4-lts.1 and prior to version 2.0.2 allows an attacker to trigger a Denial of Service (DoS) by sending a malformed multi-part upload request. This request causes an unhandled exception, leading to a crash of the process. Users should upgrade to version 2.0.2 to receive a patch. No known workarounds are available.

Proof-of-concept code is published

Public PoC

Public PoCr2c-CSE/multer-sca-rule-test_cve-2025-7338

Signals come from Exploit-DB, Metasploit, Nuclei and published proof-of-concept repositories. Their absence means nothing was found, not that nothing exists.

Assessment

CVSS: 7.5 (v3.1)
Severity: High
EPSS: 0.81% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Public PoC
Published: 17 July 2025
Last updated: 17 June 2026
Affected: expressjs · multer · multer
Weakness: CWE-248
Assigner: ce714d77-add3-4f53-aff5-83d477b104bb

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

At the source

References

Community proofs of concept

No community proof of concept yet. If you have one for a published vulnerability and the right to share it, add it below — it will appear here once reviewed.

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